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1,5-Diacetoxypentane

    • Product Name 1,5-Diacetoxypentane
    • Alias pentane-1,5-diyl diacetate
    • Einecs 214-685-3
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
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    Specifications

    HS Code

    887541

    Chemical Name 1,5-Diacetoxypentane
    Cas Number 111-87-5
    Molecular Formula C9H16O4
    Molecular Weight 188.22 g/mol
    Appearance Colorless liquid
    Boiling Point 255-258 °C
    Melting Point -30 °C
    Density 1.035 g/cm3
    Solubility In Water Insoluble
    Refractive Index 1.418
    Flash Point 105 °C
    Purity Typically ≥98%
    Synonyms Pentamethylene diacetate

    As an accredited 1,5-Diacetoxypentane factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing 1,5-Diacetoxypentane is packaged in a 500 mL amber glass bottle with a secure screw cap, labeled with safety information.
    Shipping 1,5-Diacetoxypentane is shipped in tightly sealed containers, typically made of glass or high-density plastic, to prevent leaks and contamination. The packaging complies with relevant transport regulations for chemicals. It should be labeled clearly, handled with care, and stored in a cool, dry place away from incompatible substances during transit.
    Storage 1,5-Diacetoxypentane should be stored in a tightly sealed container in a cool, dry, and well-ventilated area away from sources of ignition and incompatible materials such as strong oxidizing agents. Protect from moisture and direct sunlight. Ensure proper labeling, and avoid prolonged exposure to air. Store at room temperature and follow all applicable local, state, and federal regulations for chemical storage.
    Application of 1,5-Diacetoxypentane

    Applications of 1,5-Diacetoxypentane in Industrial Manufacturing

    1,5-Diacetoxypentane serves as a specialized intermediate and functional additive in high-value chemical manufacturing. As a consistent producer, we support downstream partners in pharmaceuticals, fine chemicals, advanced polymers, and specialty coatings. Below are focused industrial applications structured by actual sector processes and compliance needs.

    1. Active Pharmaceutical Ingredient (API) Synthesis — Specialty Intermediates

    API manufacturers integrate 1,5-Diacetoxypentane during the early or mid-stage synthesis of certain nitrogen-containing and heterocyclic drug intermediates, especially those requiring pentane chain elongation or acetoxy functionality. Its defined reactivity supports strict impurity profiles and helps achieve target moieties while meeting regulatory documentation. Usage depends on the desired yield of target structure, absolute conversion, and downstream purification efficiency. QC departments tightly monitor residual solvents and by-products to comply with regional standards.

    Industry compliance standards

    • USP/NF, Ph. Eur. submission for related intermediates
    • ICH Q7 GMP for API manufacturing
    • 21 CFR Part 211 (FDA cGMP for finished pharmaceuticals)
    • EDQM CEP documentation requirements

    Typical usage ratio

    • 0.8–1.3 molar equivalents in key transformation step; ratio varies based on specific synthesis pathway, usually adjusted to minimize side-product formation and maximize yield

    Downstream process integration

    • Added at condensation or alkylation stage after base raw material charging and solvent adjustment
    • Followed by intermediate isolation, washing, and purification before final API construction
    • Monitored by in-process HPLC and GC trace analysis for batch consistency
    • Critical for maintaining reproducible impurity profile and batch documentation

    Final product types

    • Cardiovascular drug intermediates
    • CNS-active pharmaceutical intermediates (e.g., anti-seizure/antiepileptic APIs under research)
    • Antimicrobial/antibacterial building blocks

    2. Fine Chemical Synthesis — Custom Building Block for Functional Molecules

    Multi-step fine chemical manufacturers leverage 1,5-Diacetoxypentane as a carbon spacer in the production of advanced molecules such as specialty ligands, functionalized amines, and modified alcohols. Its bifunctional acetoxy groups provide tunable leaving characteristics during nucleophilic substitution, supporting selective alkylation, etherification, and amidation reactions. The process schemes require careful stoichiometry adjustment to limit double substitution or cross-linking effects.

    Industry compliance standards

    • ISO 9001:2015 (quality management for fine chemical plants)
    • REACH Registration (EU)
    • Chemical Control Law (Japan)
    • Standard analytical protocols for residual solvent control (GC-MS, HPLC)

    Typical usage ratio

    • 1.0–1.2 molar equivalents versus nucleophile; lower values to suppress poly-substitution in selective monoalkylation

    Downstream process integration

    • Introduced during core functional group installation on base molecules in solvent media under basic or catalytic conditions
    • Followed by product extraction, aqueous work-up, and column purification depending on scale and application
    • Monitored for complete conversion using TLC, NMR, or LC-MS
    • Residue minimized to meet exact customer monograph

    Final product types

    • Bifunctional chelating agents
    • Ligands for catalyst preparation
    • Fluorescent dye intermediates
    • Modified monoamines and diamines for polymer crosslinking agents

    3. Advanced Polymer Synthesis — Chain Transfer and Crosslinking Agent

    Producers of specialty polyesters and polyurethanes employ 1,5-Diacetoxypentane as a reactive, acetoxy-terminated crosslinker or as a chain-length modifier. The spacing and reactivity profile offer custom tuning of polymer chain architecture, glass transition temperatures, and solubility parameters. Formulation chemists adjust addition points based on batch viscosity and target final molecular weight, optimizing for downstream curing or extrusion parameters.

    Industry compliance standards

    • ISO 9001/14001 (Quality/Environmental Mgt. for polymer plants)
    • FDA 21 CFR 177.1680 (Indirect food contact polyesters, if relevant)
    • EU Regulation (EC) No 10/2011 (food contact plastics, for select grades)
    • Internal company polymer specification protocols (monomer purity and migration limits)

    Typical usage ratio

    • 0.5–2.0 weight % relative to total monomers; adjusted for targeted crosslinking density and molecular mass distribution

    Downstream process integration

    • Metered into polyester polycondensation or polyurethane prepolymer reactor following initial monomer mixing
    • Integrated before catalyst or curing agent addition to control degree of crosslinking
    • Final resin purification by devolatilization and mechanical filtration
    • Quality tested by GPC and FTIR for acetoxy retention and crosslinked architecture

    Final product types

    • Thermosetting polyester resins for powder coatings
    • Flexible polyurethane elastomers
    • Specialty adhesives with tailored flexibility
    • High-clarity polyester films

    4. Specialty Coatings and Varnishes — Functional Additive for Performance Enhancement

    Specialty coatings formulators utilize 1,5-Diacetoxypentane as a chemical modifier to control film formation, plasticization, and crosslink density in advanced solvent-based coatings and varnishes. The diacetate structure modulates evaporation profile and in situ hydrolysis rates, imparting targeted flexibility and anti-block or gloss properties. Dosage strictly follows formulation guides to match final film hardness, dry time, and chemical resistance required for automotive and electronics markets.

    Industry compliance standards

    • ISO 12944 (Corrosion protection by coatings for industrial facilities)
    • EN 71-3 (Toy safety: migration of certain elements for consumer coatings)
    • RoHS Directive 2011/65/EU (Restriction of hazardous substances for electronics)
    • ASTM D3359 (Adhesion of coating films quality test)

    Typical usage ratio

    • 1.5–7.0 weight % relative to total resin solids; adjusted based on desired coating flexibility, hardness, and regulatory migration tests

    Downstream process integration

    • Added to main resin kettle during final solvent adjustment or pigment dispersion phase
    • Incorporated prior to final filtration and quality control sampling
    • Film drying and post-curing stages monitored by solvent residue tests and crosslink level analysis
    • Adjusted based on required final appearance and end-use exposure

    Final product types

    • Automotive OEM and refinish coatings
    • Electronics enclosure varnishes
    • Decorative architectural coatings (select uses)
    • Specialty anti-block lacquer topcoats
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    Certification & Compliance
    More Introduction

    1,5-Diacetoxypentane: Practical Chemistry from a Manufacturer’s Viewpoint

    Practical Insights into 1,5-Diacetoxypentane Manufacture

    Manufacturing 1,5-diacetoxypentane involves more than batch numbers and certificates — it’s a process that demands careful control, tested know-how, and an experienced sense for quality. As one of the steady hands behind its production, I want to lay out why this molecule matters, what goes into making it at industrial scale, and how it stands out in a market full of acetoxy compounds.

    In chemical manufacturing, we often gravitate toward products that consistently deliver productive results in downstream applications. 1,5-diacetoxypentane has built a solid reputation as a key intermediate, particularly for companies developing specialty chemicals, pharmaceuticals, and advanced materials. The raw value lies in its diacetate structure — two acetate groups bracketed by a pentane chain. This chemical backbone opens possibilities in modification and functionalization that other esters and diacetates can’t always match.

    Specifications that Support Real-World Usage

    While some molecules allow a lot of leeway in purity, 1,5-diacetoxypentane typically gets produced with purity benchmarks that hover near the top end of the scale. For our plant, purity checked by GC routinely pushes past 98%, and we often supply even higher grades for specialized customers. Moisture and color usually matter, since downstream processing — hydrogenation, transesterification, acetal formation — can all get sidetracked by minor impurities or water traces.

    We’ve fine-tuned our production runs to deliver the product as a clear, low-odor liquid. Color numbers are kept well below 10 APHA (platinum-cobalt scale) because yellowish batches point to oxidation or side-reactions. Even basic aspects like packaging and container compatibility carry long discussions in our team meetings, since high-purity acetates can interact with seals or leech trace metals from storage drums over time.

    How We Achieve High Specifications and Consistency

    Running batch after batch makes clear which company practices separate rough product from top-grade material. We source pentanediol with confirmed chain length and conduct thorough filtration before feeding it into the acetylation reaction. Only glacial acetic acid and industry-accepted acetylating agents make the cut. Tempers run high around batch logs — a controlled reaction temperature and slow addition of reagents lead to a smoother final product and less by-product generation.

    Our purification procedures probably see more scrutiny than any other production step. Fractional distillation under reduced pressure isn’t an optional step; it’s table stakes for making 1,5-diacetoxypentane that downstream users trust when they scale up.

    Routine lab checks on each batch test for not only purity and moisture, but also acidity and carbonyl content, since uncontrolled acid levels easily knock a client’s synthesis out of specification. We treat these details as a direct line to our reputation. If a shipment doesn’t meet internal standards, it never leaves our gate.

    Meeting the Changing Needs of the Chemical Industry

    Regular conversations with our clients reveal how demand keeps shifting. Sometimes, new regulations push the industry toward specific grades or packaging types. In pharmaceuticals, users ask about residual solvents, low water content, and the organic impurities profile. Coatings and adhesives producers care more about consistency in color and low acidity. Each segment pushes manufacturing in a different direction. Flexibility at the plant level often determines whether a product like 1,5-diacetoxypentane finds repeat buyers.

    Our plant managers have stood on the same floors as our customers’ engineers to see exactly how the product flows into their systems. This hands-on approach shapes decisions from solvent recycling to tank selection. For example, we switched to lined drums and upgraded our nitrogen blanketing process after seeing a client struggle with trace hydrolysis over long-term storage.

    We’ve also seen new growth in custom blends and modified acetates. Sometimes a customer wants a mixed diacetate-ether product, or a pre-blended solution of 1,5-diacetoxypentane with a select cosolvent. Instead of forcing a standard SKU, we talk through the real technical needs in the field and adjust our production runs.

    How 1,5-Diacetoxypentane Compares to Related Acetoxy Products

    As producers, we’re often asked: what sets 1,5-diacetoxypentane apart from other linear diacetates and monoacetates? In lab-scale reactions, the difference seems subtle. But the distinction grows at manufacturing volumes. The pentane backbone (five carbons) positions both acetoxy groups far enough apart that the molecule stays liquid at room temperature and resists spontaneous ring formation. This grants 1,5-diacetoxypentane a long shelf life and high utility in esterification, cross-linking, and specialty polymer chemistry.

    Take other widely-used diacetates, such as 1,2-diacetoxyethane or 1,4-diacetoxybutane. These compounds either display more volatility or bring different reactivity profiles into the mix due to backbone length and proximity of acetoxy substituents. Shorter diacetates can hit volatility limits or suffer from lower hydrolytic stability. Longer chains, like 1,6-diacetoxyhexane, may trade off liquid range and handling ease for lowered reactivity or compatibility in target applications. Our product nails that practical balance — low melting point, suitable viscosity, and a manageable boiling range for large tanks, pumps, and sealed lines.

    From a formulation angle, the spacing between acetoxy groups also impacts how the molecule crosslinks or reacts in polymer matrices and complex organic syntheses. Polymer scientists look for diacetates that provide a clean incorporation of acetate groups, minimizing random cleavage or integration points. 1,5-diacetoxypentane performs reliably in these scenarios, avoiding the cracking or side reactions that can crop up with monoacetates.

    Production engineers report fewer headaches with its storage, since it neither crystallizes easily under normal temperatures nor forms problematic peroxides. Trying to substitute it directly with shorter diacetates or unrelated esters usually leads to readjustments in process conditions, and sometimes, a drop in overall process yield.

    Applications We’ve Supported Directly

    Most customer conversations start with “we’re using this as an intermediate…” but over the years we’ve seen inventive uses that confirm why 1,5-diacetoxypentane deserves its own slot in the catalog.

    In one major application, we regularly supply pharmaceutical intermediates manufacturers who use it as a starting material for synthesizing specialized protective groups and linkers. These companies rely on the dual acetoxy substitution to create selectivity in organic transformations, often choosing our product because alternatives don’t offer the same reliability or reactivity at scale.

    Industrial coatings and adhesives sectors also see regular truckloads leave our gates. Here, 1,5-diacetoxypentane often enters as a crosslinking agent or a co-monomer, adding flexibility and unique features to resins and cured products. Some plants love its balance of volatility and solubility, while others appreciate its clean purity for UV-cured systems. Instead of generic esters that can shift project outcomes, these companies favor our diacetoxy compound for projects requiring predictable performance batch after batch.

    Smaller specialty firms, especially in research or pilot-scale domains, have leaned on custom-sized lots and blended formulations. University and contract lab researchers appreciate simple order processes and transparent paperwork, but they come back for the consistency in product performance — a badge of honor for any manufacturer operating in fine chemicals.

    Processing Advantages and Behavioral Traits

    Experience shows that the product’s low viscosity and manageable vapor pressure make plant-scale handling straightforward. Pumps run without cavitation or plugging. Stainless steel lines resist fouling and stress cracking because the molecule lacks aggressive corrosive features or free acids. We keep an eye on residual acidity far below 0.1% — fresh batches push even lower. Batches stored under inert gas in the right containers have logged months of stability without color drift or odor spikes.

    Shipping remains relatively simple, thanks to a decent boiling range and flash point that sits safely above many solvents or short-chain esters. Storage tanks heat evenly and cleaning cycles rarely stretch beyond standard solvent flushes.

    Compared to chain-extended, higher molecular weight acetoxy compounds, 1,5-diacetoxypentane offers a sweet spot. It slips into production lines set up for medium-boiling solvents, but provides greater reactivity in acetylation, alkylation, and crosslinking steps. Paint and coatings specialists often voice appreciation for its easy blending with esters, glycols, and ethers, sidestepping the gelling or separation events that can plague more complex iso- or cyclic structures.

    Waste handling brings another reliability point. Due to its relatively clean degradation, waste streams rarely present major disposal challenges. Collaborations with waste treaters indicate that standard organic wastewater processing suffices under most regulatory regimes, a small-but-important factor for our larger clients.

    Supporting Safe, Responsible Use — and Avoiding Common Missteps

    From the shop floor to the field, chemical safety runs through every phase of handling. Acetates in this family share common hazards — they’re combustible, and breathing heavy vapors over the long term can irritate the respiratory tract. Our guiding rule: treat 1,5-diacetoxypentane with the same care you’d expect for any flammable liquid with moderate volatility.

    Before shipments leave our site, packaging lines run checks for leaks or closure issues. Each container gets nitrogen blanketed to stave off oxidation. Our crew trains customers — and sometimes their logistics partners — on proper drum storage, grounding, and the need to keep containers tightly closed when not in use. Over the years, this has cut down on evaporation losses and spill incidents.

    Sometimes customers ask about downgauging to unlined steel drums or plastic, in efforts to trim costs. In practice, we’ve observed discoloration or off-odors in batches left too long in non-lined containers. These issues disrupt both production and downstream quality assurance. Clear communication about storage best practices always pays off.

    What Makes Consistent Quality Difficult — and How We Address Challenges

    Behind every drum sits hours of process design, plant maintenance, and real-world experience. Sourcing high-purity pentanediol drives costs but determines performance. Running modern reactors with strong agitation, clear temperature control, and sealed additions keeps our processes inside strict windows.

    Batch-to-batch consistency isn’t just a function of chemistry. It comes from disciplined plant operation — replacing filters on schedule, calibrating sensors, and sticking with time-honored cleaning routines. We don’t chase ticking clocks by cutting corners on residence time or temperature cycles. Unique challenges, such as runaway acetylation or stuck distillations, do crop up, but getting ahead of plant limits with up-to-date controls and operator training makes these rare events.

    Scale-up operations sometimes show that what works in a kilo lab reacts very differently in 15,000-liter reactors. Years of debugging and lessons learned from earlier mishaps have improved our process’s robustness and safety. Shorter plant shutdowns, less downtime, and reliable documentation close the loop in every product batch.

    Learning from the Downstream — Customer Feedback as a Guidepost

    No product reaches its full potential without time spent alongside the users. We stay in active contact with process chemists, plant engineers, and R&D leads. Every feedback loop sharpens how we refine our process. Sometimes, it’s as simple as matching color specs or shifting to a different drum size. Other times, feedback triggers a deeper look at impurity profiles or renews collaboration on application trials.

    For example, a pharmaceutical producer explained that certain downstream reactions showed trace acid formation. We adjusted our purification step, adding another wash, and tracked impurity levels over months. The result — a product that passed the client’s trace impurity audit and secured us a multi-year contract.

    Big changes in application methods — whether by new reactor designs, automation integrations, or renewable feedstocks — also prompt us to adapt. The steady shift toward greener solvents and feedstocks in Europe nudged us toward solvent recovery systems and more thorough lifecycle traceability. Clients appreciate the ability to trace raw materials, especially when new documentation rules come into force.

    Responsibility and Sustainability in Manufacture

    We’ve witnessed how the chemical industry’s thinking on sustainability keeps evolving. Instead of seeing regulatory shifts as a headache, we work proactively to limit solvent waste, streamline recycling in production, and push for better energy usage across our plant. Closed-loop water cycles and heat integration schemes now feature in all our acetylation lines — not because of external pressure, but because they directly cut costs, improve safety, and tighten process control.

    On-site effluent treatment, careful management of by-products, and improved logistics mean deliveries stay safer and more reliable, with less environmental risk. We don’t market 1,5-diacetoxypentane as a “green” product, but real sustainability gains make our operations resilient to new rules and market pressure.

    What’s Next for 1,5-Diacetoxypentane Manufacturing and Use?

    Looking forward, several trends shape how we’ll continue to manufacture and supply 1,5-diacetoxypentane. Strong demand from pharmaceutical and performance material markets keeps our lines busy and drives us to upgrade plant assets. Automation, in-line analytics, and advanced QC testing become more central every year, pushing human error out and raising the bar for what quality means.

    Our teams track new application notes, research projects, and regulatory changes closely. For example, expectations for tracking impurity profiles, VOC emissions, and even cradle-to-gate environmental impact have sharpened noticeably. Developing transparent supply chains — with full disclosure on how raw materials are sourced, processed, and delivered — guides how we build customer relationships and prioritize investments.

    We also plan for the long view. Scaling up requires capital investment and trained operators, but these measures keep our product competitive while supporting the technical and environmental benchmarks that matter most to our customers. Investing in skilled people, modern safety practices, and greener plant systems stays front and center as markets shift and pressure grows for smarter manufacturing.

    Final Thoughts from the Plant Floor

    Years spent manufacturing 1,5-diacetoxypentane have confirmed that practical chemistry starts and ends with attention to detail, conversation with end-users, and a willingness to adapt the process to real needs. This compound stands out not just for what it offers on paper, but for how it supports robust, reproducible results in labs and plants across industries. From drum selection to process optimization, every detail matters; overlooking the “small stuff” easily undermines the effort invested in high-purity manufacturing.

    We learn every day from the plants and labs who turn to us for reliable diacetates. Their diverse application fields, process knowledge, and feedback keep this familiar product fresh and push us to keep refining how we make and support it. 1,5-diacetoxypentane continues to deliver value to demanding customers and lets us demonstrate what real experience and manufacturing diligence make possible on the plant floor.